Hi,

Acid rain, or acid deposition, is a broad term that includes any form of precipitation with acidic components, such as sulfuric or nitric acid that fall to the ground from the atmosphere. These may be  in wet or dry forms.  This can include rain, snow, fog, hail or even dust that is acidic.

Acid rain results when sulphur dioxide and nitrogen oxides are emitted into atmosphere and transported through air and wind

Acid rain cause harmful effects on living forms , when it enters oceans or rivers aquatic animals due because of high acidic conditions.

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

Acid rain affects nearly everything. Plants, soil, trees, buildings and even statues can be destroyed by the precipitation. The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes. The after effects of acid rain have been found to be very hard on trees. It weakens them by washing away the protective film on leaves, and it stunts growth.

Acid rain describes a form of precipitation that contains high levels of nitric and sulfuric acids. It can also occur in the form of snow, fog, and tiny bits of dry material that settle to Earth. Normal rain is slightly acidic, with a pH of 5.6, while acid rain has ph between 4.2-4.5.the effects of acid rain could be many like climate change, it has major pollutants which are harmful to people on earth. these pollutants damage both the environment and health of people.it also causes some serious problems to aquatic life. Few of them can tolerate but many aquatic life die which eventually causes a disturbance in food chain.it also spoils the soil of the forest which contains essential nutrients, hence no water to plants and trees so it causes problems to forests as well. hence it causes some serious problems .

Hope this helps.